package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.Minioproperities;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import jakarta.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Resource
    private MinioClient minioClient;
    @Autowired
    private Minioproperities minioproperities;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {


            boolean bool = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioproperities.getBucketName()).build());
            if (!bool) {
                minioClient.makeBucket(MakeBucketArgs
                        .builder()
                        .bucket(minioproperities.getBucketName()).build());}
                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder()
                        .bucket(minioproperities.getBucketName())
                        .config(createBucketPolicyConfig(minioproperities.getBucketName())).build());
                String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
                minioClient.putObject(PutObjectArgs
                        .builder()
                        .bucket(minioproperities.getBucketName())
                        .object(filename)
                                .contentType(file.getContentType())
                        .stream(file.getInputStream(),file.getSize(), -1).build());
              String url = String.join("/", minioproperities.getEndPoint(), minioproperities.getBucketName(), filename);
                return url;



    }
    private String createBucketPolicyConfig(String bucketName) {

        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
            """.formatted(bucketName);
    }
}
